Need help. Here is my issue. My son is 14 years old 5’7” 150 pounds. We ride woods and motocross. At this time more woods. He is currently riding a CR 150R expert and is very fast. He has been riding now for around 5 years. This past weekend after I wore out he spent the better part of Monday riding my WR 450 and just had a blast. Now that he has all but outgrown his 150 my thought for him was to move him to the YZ 250F The button and the WR overall do not interest him, he prefers the motocross bikes. When comparing the models and specs I see that the WR 250 weighs 22 pounds more than the YZ 450. As fast as this kid is growing would it make sense to put him on the YZ250 only to be looking at the YZ450 in a year or so? Am I crazy to put a 14 year old kid on the YZ450? YZ 250 or YZ 450 Please give me some things to think about? With the deals they have now on the 2009 models I need to decide. Thanks for all your expertise. This is an awesome site.